It's taken me almost half a year now, but we're finally one year before the debut of Superman now.
here). We see a caveman skinning a giant sloth (both cavemen and giant sloths were statted in Book II: Mobsters and Trophies) -- and the last encounter looks an awful lot like my gibbon men! As I mentioned back here, the gibbon men were a cheat, intended to fill a niche in the game without any evidence of their existence, but it's nice to finally see them on the page!
(Scans courtesy of Digital Comic Museum)